I can't really bring myself to see anger as something that must inherently be extinguished. Anger is a perfectly natural human emotion... and in my opinion, even an "ideal" world would still be quite familiar with anger.
Of course, there are intelligent ways to deal with anger, since it IS symptomatic of an unstable situation wherever it arises. As has already been mentioned, I've found that different scenarios call for different responses to anger. Sometimes anger is genuinely justified and, in fact, to uncomfortably suppress that anger needlessly in such situations can't be exceptionally healthy. A great deal of damage is done to human relationships by simple dishonesty in conveying how we feel without affectation or distortion. One simply needs to take care not to let that anger cloud their judgment, which, granted, is easier said than done.
That being said, there's no reason we can't handle our anger in a way that's intelligent while still not poorly representative of how we really feel. I tend to keep the thought in my mind that anger, in general, is a very draining emotion to entertain any further than necessary. It wipes me out and I've found that although it may sometimes be necessary to see my anger through to it's resolution in order to satisfy the scenario, a resolution is all that can really be hoped for. Outside of those that desire something of an ego trip, the best that one can hope for if they entertain their anger flippantly is an end to an already bad situation. Thus, although a yelling match, for instance, may see me coming out on top, everyone loses as far as emotion toll and expenditure of energy. Furthermore, expressing anger too carelessly will have the tendency to create around you a world where that anger becomes more and more common and ever-present.